Nebulous is a post apocalyptic science fiction comedy radio show written by Graham Duff and produced by Ted Dowd from Baby Cow Productions; it is directed by Nicholas Briggs. The series premiered in the United Kingdom on BBC Radio 4. The show focuses on the adventures of the eponymous Professor Nebulous, leader of the eco-troubleshooting team of K.E.N.T. (the Key Environmental Non-Judgmental Taskforce) as they combat various catastrophes and try and set the world back on the right path. As well as being a parody of a number of famous science fiction programmes, including Doctor Who, Quatermass and Doomwatch, Nebulous is considered a cult radio programme, attracting a number of guest appearances from famous actors. As of 2007, there have been two series of Nebulous; the first was broadcast between 6 January and 10 February 2005, and